Drinking cup



FIG. 1 is a perspective view of a drinking cup in accordance with our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing further details of the drinking cup are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a drinking cup, as shown and described. 